/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.activiti.spring.autodeployment;

import org.activiti.engine.ActivitiException;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.DeploymentBuilder;
import org.springframework.core.io.Resource;

import java.io.IOException;
import java.util.zip.ZipInputStream;

/**
 * Implementation of {@link AutoDeploymentStrategy} that performs a separate
 * deployment for each resource by name.
 *
 * @author Tiese Barrell
 */
public class SingleResourceAutoDeploymentStrategy extends AbstractAutoDeploymentStrategy {

    /**
     * The deployment mode this strategy handles.
     */
    public static final String DEPLOYMENT_MODE = "single-resource";

    @Override
    protected String getDeploymentMode() {
        return DEPLOYMENT_MODE;
    }

    @Override
    public void deployResources(final String deploymentNameHint, final Resource[] resources, final RepositoryService repositoryService) {

        // Create a separate deployment for each resource using the resource name

        for (final Resource resource : resources) {

            final String resourceName = determineResourceName(resource);
            final DeploymentBuilder deploymentBuilder = repositoryService.createDeployment().enableDuplicateFiltering().name(resourceName);

            try {
                if (resourceName.endsWith(".bar") || resourceName.endsWith(".zip") || resourceName.endsWith(".jar")) {
                    deploymentBuilder.addZipInputStream(new ZipInputStream(resource.getInputStream()));
                } else {
                    deploymentBuilder.addInputStream(resourceName, resource.getInputStream());
                }
            } catch (IOException e) {
                throw new ActivitiException("couldn't auto deploy resource '" + resource + "': " + e.getMessage(), e);
            }

            deploymentBuilder.deploy();
        }
    }

}
